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WASHINGTON WORKS Teflon Polymer Division PERSONAL AND CONFIDENTIAL OTO: W.

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BACK TO MAIN BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, FC-128 or as the major component of FC-127, FC-129, FC-109, FC-109-X, FC-4351, or L-6778.

FOR DU PONT USE ONLY AR226-2790 Approximate Lethal Concentration by Inhalation (ALC) of Ammonium Perfluorononanoate (C-9) Haskell Laboratory Report No. 293-85 Haskell E.

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Oral Teratology Study of FC-95 in Rats Experiment No.: Conducted At: Dosing Period: Study Director: 0680TROOOB Safety Evaluation Laboratory Riker Laboratories, Inc.

BUSHY RUN RESEARCH R.

AR226-1989 -;-, . ..i/W^'.r - ^.

AR226-2069 WASHINGTON WORKS INDUSTRIAL.

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ATTACHMENT TO LETTER OF 2/9/05 3M FLUOROCHEMICAL SUBMISSION BACK TO MAIN 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE PFOA Perfluorooctanoic Acid 1.

C orporate O ccupational M edicine 3M Center, Building 220-3W-05 St.